21.   The tank attack violated U.N. agreements, but U.N. officials say retaliatory NATO airstrikes are unlikely before all hostages are freed.

22.   If the FARC is indeed responsible, the attacks would violate the spirit of the peace talks.

23.   At the time, the United States said the attack had violated a pledge made by Sudanese authorities in January to end bombings of civilian targets for four weeks.

24.   Boucher said the attack had violated a pledge made last month to US special envoy for Sudan John Danforth to end bombings of civilian targets for four weeks.